Whenever you start moving toward your dreams, you will have questions. Do I know enough info, how I get this done, what about this, and many more questions will swarm your mind? It's good to have a general understanding of what you're trying to accomplish and then start taking action. You don't want to be stuck in analysis paralysis where thinking is the only action you take. Taking action on those ambitions is the best teacher because you'll gain valuable experience. In some cases, you may even be better than you expected and strike big. You'll never know until you actually start.